Dredging is a key maintenance activity for keeping U.S. waterways navigable, but it raises significant environmental concerns.

A major environmental concern related to the maintenance of U.S. waterways is the destruction of aquatic habitats during dredging. Dredging is necessary to clear sediment and debris from riverbeds, allowing larger vessels to pass. However, the process can disrupt local ecosystems, destroy fish spawning areas, and release toxic chemicals or pollutants that have settled on the riverbed over time. This environmental impact can threaten biodiversity, water quality, and the health of aquatic species. Managing these effects through careful planning and mitigation efforts is crucial for preserving aquatic habitats while maintaining navigability.